Heiden Weather in September

September in Heiden averages 19°C (66°F) during the day and 10°C (50°F) at night. Quite a bit of rainfall is typical this month, with around 137 mm (5.4 in) on average. An umbrella is a good idea.

Rainfall in Heiden in September

Historically, the month has about 13 days of rain, averaging 137 mm (5.4 in) in total. When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.

Temperature in Heiden in September

In September, Heiden sees pleasant temperatures, with highs of 19°C (66°F). Nights drop to around 10°C (50°F). A light jacket or extra layer can be useful, especially outside the warmest hours of the day. Nights cool down to 10°C (50°F), so a light jacket or extra layer is useful once the sun goes down. On the plus side, the cooler nights make for comfortable sleeping conditions.

Sunshine in Heiden in September

The area enjoys a balanced 155 hours of sunlight, ensuring it's neither too overcast nor too sunny.

If your ideal day consists of dry skies and pleasant temperatures, July and August typically offer the best circumstances for Heiden.

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• January
• February
• March
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• May
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• October
• November
• December

For a detailed overview over the year and the best time to visit Switzerland, check out our Heiden's climate page.

Heiden Temperature in September

Min Temperature 10°C (50°F)  

Max Temperature 19°C (66°F)  

Chance of Rain 42%  

Precipitation 137 mm (5.4 in)  

Rainy days 13 days  

Humidity 78% *  

Sunshine 155 hours *  

Percentage Sunshine 44% *  

* Data from: St. Gallen, Switzerland (11 KM, 7 Miles).

What to Wear in Heiden in September

Pleasant temperatures in September mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Prepare for significant rainfall with proper waterproof clothing and shoes. Bring sunglasses since you'll have some sunny periods throughout the month

What To Do in Heiden in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

6/10

Cycling

9/10

Walking

9/10

Camping

6/10

Outdoor sports

9/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Switzerland, check out our Heiden's climate page.

More climate data for Heiden

Temperature Rainfall Sunshine Humidity

See the full Heiden climate overview or explore weather in Switzerland.